Contents  on 7 October '19

Asteroid/Comet Connection (A/CC) Resources:

The latest A/CC news is available via framed access, RSS news feed RSS news feed, or redirection.

Navigation tips: Use the << and >> arrows on the menus for each regular section (Observers, Risks, etc.) to move to the previous and next day's news for that section. Use the Index menu item to access specific days through a calendar interface. To keep track of what's new each day, watch the Chronology section.

Traffic Report  on 7 October '19

Fourteen objects reported inside ten LD


There are Fourteen asteroids reported inside ten lunar distances (LD) of Earth today. The nearest of these, 2019 TW1 enters Earth's SOI, coming in from about 3.7 to 1.7 LD*.

Neighborhood Traffic - sorted by Earth passage distance, grouped by 1.0, 2.41, 5.0 & 10.0 LD boundaries
Earth passage I D ~Size Distance today  Inside ten LD Notes
0.97 LD Oct. 3 2019 SP3 19 m  7.24 to 9.15 LD Sept. 28 - tomorrow intruder, risk
1.25 LD Oct. 4 2019 TX 6 m  3.48 to 5.02 LD Sept. 28 - Oct. 11 NHATS target, risk
1.41 LD Oct. 9 2019 SL7 21 m  6.29 from 10.06 LD today - Oct. 12 enters ten LD, risk - DOU
1.5   LD tomorrow* 2019 TW1 9 m  1.7 from 3.7 LD Oct. 4 - 12 EPU +/- 9 mins.*, enters Earth SOI
2.36 LD Sept. 24 2019 SU3 13 m  7.83 to 8.40 LD Sept. 6 - Oct. 10 NHATS target, risk - DOU
3.5   LD tomorrow* 2019 TC1 12 m  3.8 from 5.6 LD Oct. 5 - 11 EPU +/- 50 mins.*
3.67 LD yesterday 2019 TF3 9 m  3.72 to 4.06 LD Sept. 28 - Oct. 14 NEW - MPEC
4.11 LD Oct. 5 2019 TV 8 m  5.40 to 6.90 LD Sept. 30 - Oct. 9
4.38 LD tomorrow 2019 TU 21 m  4.42 from 5.19 LD Oct. 4 - 12 risk
4.50 LD Oct. 2 2019 TW 10 m  5.74 to 6.29 LD Sept. 21 - Oct. 13 NHATS target - DOU
7.75 LD tomorrow 2019 SB6 15 m  7.80 from 8.19 LD Oct. 4 - 12 NHATS target
8.02 LD Oct. 9 2019 TZ 17 m  8.85 from 10.23 LD today - Oct. 11 enters ten LD
8.40 LD tomorrow 2019 TS 27 m  8.47 from 8.86 LD Oct. 5 - 11 DOU
9.39 LD tomorrow 2019 TM 36 m  9.51 from 10.35 LD today - Oct. 9 enters ten LD

This report was updated at 2225 UTC with the discovery of outbound 2019 TF3 (MPEC). Your first neighborhood asteroid traffic report was generated at 2005 UTC with with five discoveries. From late yesterday there is already departed 2019 TC2 (MPEC), which went by us at about 4.3 LD* on the last day of September (approach uncertainty +/- 18 minutes). And from today we have approaching objects 2019 TH2 (MPEC) and 2019 TE2 (MPEC), and departed objects 2019 TU2 (MPEC), which passed at 7.8 LD* on September 23rd (uncertainty +/- 8.6167 hours), and 2019 TT2 (MPEC), at 6.01 LD on October 2nd. Today's DOU MPEC has follow-up for five objects in our active traffic tables (above and below) and for eleven departed objects: 2019 TB, 2019 TA, 2019 SG9, 2019 ST8, 2019 SL3, and six risk-listed -- 2019 TF1, 2019 SK9, 2019 SD, 2019 RT3, including intruders 2019 TD and 2019 SX8.

Approaching Traffic - sorted by 10-LD bubble entry date
Earth passage I D ~Size Distance today  Inside ten LD Notes
2.9   LD Oct. 13* 2019 TT1 22 m  17.5 from 20.5 LD Oct. 10 - 16 EPU +/- 2.02 hours*
9.3   LD Oct. 13* 2019 TH2 19 m  13.1 from 14.5 LD Oct. 11 - 15 NEW, EPU +/- 9 mins.* - MPEC
8.57 LD Oct. 12 2019 SV9 28 m  17.18 from 19.87 LD Oct. 11 - 14 DOU
8.30 LD Oct. 18 2019 TE2 26 m  24.60 from 26.83 LD Oct. 15 - 20 NEW - MPEC
*EPU = Earth passage uncertainty



Notes: Ten times the distance to the Moon (ten LD) has no astronomical importance but is a useful boundary for reporting about transient natural objects that approach our planet's gravitational sphere of influence (SOI), which has a radius of about 2.41 LD from Earth's center. This puts a focus on some of the most important and very best NEO observation work, representative of the much larger NEO discovery and tracking effort. Object temporal distances are derived by A/CC from JPL Horizons data. "LD*" indicates some uncertainty in object passage time and distance. See also current sky chart and object details (alt-details), ephemerides, and today's timeline.

NEOCP Activity  on 7 October '19

The MPC's NEO Confirmation Page has 86 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 86 objects listed. Of these, 50 were "one nighters." So far The Tracking News has counted a total of 122 listings on the NEOCP today.

To learn how observers use the NEOCP, see the Practical guide on how to observe NEOCP object at Suno Observatory by Birtwhistle et al.

New MPECs  on 7 October '19

Minor Planet Electronic Circulars

As of last check at 2358 UTC, there have been 30 MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2019-T141 - "23:51 UT" - 2019 TH3


MPEC 2019-T140 - "21:42 UT" - S/2004 S 30


MPEC 2019-T139 - "20:23 UT" - 2019 TF3


MPEC 2019-T138 - "20:09 UT" - 2019 TE3


MPEC 2019-T137 - "18:21 UT" - S/2004 S 30


MPEC 2019-T136 - "18:12 UT" - S/2004 S 29


MPEC 2019-T135 - "18:10 UT" - S/2004 S 28


MPEC 2019-T134 - "18:08 UT" - S/2004 S 27


MPEC 2019-T133 - "18:07 UT" - S/2004 S 26


MPEC 2019-T132 - "18:05 UT" - S/2004 S 25


MPEC 2019-T131 - "18:03 UT" - S/2004 S 24


MPEC 2019-T130 - "17:52 UT" - 2019 TV2


MPEC 2019-T129 - "16:56 UT" - S/2004 S 23


MPEC 2019-T128 - "16:51 UT" - S/2004 S 22


MPEC 2019-T127 - "16:41 UT" - S/2004 S 21


MPEC 2019-T126 - "16:34 UT" - S/2004 S 20


MPEC 2019-T125 - "15:54 UT" - 2019 TU2


MPEC 2019-T124 - "15:44 UT" - 2019 TT2


MPEC 2019-T123 - "15:42 UT" - 2019 TS2


MPEC 2019-T122 - "15:17 UT" - 2019 TR2


MPEC 2019-T121 - "15:15 UT" - 2019 TQ2


MPEC 2019-T120 - "14:02 UT" - 2019 TN2


MPEC 2019-T119 - "13:57 UT" - 2019 TM2


MPEC 2019-T118 - "13:55 UT" - 2019 TL2


<< DOU on 7 October '19 >>  MPEC 2019-T117 - "12:22 UT" - Daily Orbit Update


MPEC 2019-T116 - "11:09 UT" - Comet 2I/Borisov


MPEC 2019-T115 - "00:06 UT" - 2019 TH2


MPEC 2019-T114 - "00:04 UT" - 2019 TG2


MPEC 2019-T113 - "00:03 UT" - 2019 TF2


MPEC 2019-T112 - "00:01 UT" - 2019 TE2

Observers  on 7 October '19

A total of 52 observers appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 14 in MPEC 2019-T117 -- 2019 TD, 2019 TA, 2019 SY8, 2019 SV1, 2019 SS8, 2019 SP1, 2019 SA10, 2019 QW4, 2019 QN1, 2019 NJ6, 2015 PN307, 2011 YH6, 2004 EO20, 153792
T05ATLAS Haleakala in Hawaii, 30 in MPEC 2019-T117 -- 2019 LW1, 2019 GT3, 2014 XX7, 2008 SR1, 85839, 85709, 537342, 524603, 494880, 492143, 467475, 458745, 395289, 373428, 35107, 334412, 297418, 252793, 214088, 154278, 143527, 140333, 7092, 4487, 4183, 3753, 3102, 2059, 1866, 1620
T08ATLAS Mauna Loa in Hawaii, 19 in MPEC 2019-T117 -- 2019 JP2, 85839, 489486, 450160, 348461, 326777, 326742, 326291, 303262, 248926, 243025, 237805, 18172, 162273, 162082, 137084, 11885, 6455, 3200
069Baldone Obs. in Latvia, 1 in MPEC 2019-T116 -- 2
C77Bernezzo Obs. in Italy, 1 in MPEC 2019-T116 -- 2
Z84Calar Alto Schmidt in Spain, 1 in MPEC 2019-T114 -- 2019 TG2
160Castelmartini Obs. in Italy, 8 in MPECs 2019-T116 & 2019-T117 -- 2017 MN8, 85839, 85709, 530743, 481985, 373428, 141593, 2
703Catalina Sky Survey (CSS) in Arizona, 41 in MPECs 2019-T117 & 2019-T138 -- 2019 TS, 2019 TE3, 2019 SX5, 2019 SH4, 2019 SF3, 2019 SE2, 2019 NT6, 2019 MV3, 2014 XX7, 2013 CK89, 2009 SP, 2008 SR1, 2007 TQ24, 2006 SK134, 2005 VC2, 88959, 85709, 537342, 524603, 494880, 467475, 458745, 411201, 395289, 334412, 318411, 25330, 252793, 252399, 228502, 214088, 163760, 162162, 159399, 152942, 143947, 143527, 106589, 7092, 6047, 2059
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 19 in MPECs 2019-T112, 2019-T113, 2019-T115, 2019-T117, 2019-T118, 2019-T121, 2019-T122, 2019-T123, 2019-T125 & 2019-T139 -- 2019 TY, 2019 TU2, 2019 TS2, 2019 TR2, 2019 TQ2, 2019 TL2, 2019 TJ, 2019 TH2, 2019 TF3, 2019 TF2, 2019 TE2, 2019 SZ, 2019 SW10, 2019 SP6, 2019 SM7, 2019 SJ1, 2019 SH6, 2019 SF3, 2019 SE2
A77Chante-Perdrix Obs. in France, 1 in MPEC 2019-T116 -- 2
J01Cielo Profundo Obs. in Spain, 1 in MPEC 2019-T116 -- 2
850Cordell-Lorenz Obs. in Tennessee, 1 in MPEC 2019-T116 -- 2
006Fabra Obs. in Spain, 1 in MPEC 2019-T117 -- 1620
734Farpoint Obs. in Kansas, 7 in MPECs 2019-T114, 2019-T115, 2019-T119, 2019-T120, 2019-T124, 2019-T130 & 2019-T138 -- 2019 TV2, 2019 TT2, 2019 TN2, 2019 TM2, 2019 TH2, 2019 TG2, 2019 TE3
157Frasso Sabino Obs. in Italy, 1 in MPEC 2019-T116 -- 2
I88Fuensanta de Martos Obs. in Spain, 1 in MPEC 2019-T116 -- 2
X31Galilei Obs., 1 in MPEC 2019-T138 -- 2019 TE3
511Haute Provence Obs. in Germany, 1 in MPEC 2019-T116 -- 2
Q62`Steven M. Tilley in Louisiana via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2019-T130 -- 2019 TV2
585Kiev Comet Station in Ukraine, 1 in MPEC 2019-T116 -- 2
695^Spacewatch via Kitt Peak Natl. Obs. (KPNO) in Arizona, 10 in MPEC 2019-T117 -- 2019 TD, 2019 TB, 2019 SX8, 2019 SQ8, 2019 SK9, 2019 SD10, 2019 SD, 2019 RT3, 2019 QR6, 2017 UR4
D95Kurihara Obs. in Japan, 1 in MPEC 2019-T116 -- 2
W87LCO Cerro Tololo C in Chile, 1 in MPEC 2019-T117 -- 2019 SV9
W92MASTER OAFA Obs., 1 in MPEC 2019-T117 -- 136993
K95MASTER-II Sutherland in South Africa, 3 in MPEC 2019-T117 -- 2019 RD, 136993, 9400
474Mt. John Obs. in New Zealand, 10 in MPECs 2019-T112, 2019-T113, 2019-T114, 2019-T115, 2019-T118, 2019-T122, 2019-T123, 2019-T138, 2019-T139 & 2019-T141 -- 2019 TS2, 2019 TR2, 2019 TL2, 2019 TH3, 2019 TH2, 2019 TG2, 2019 TF3, 2019 TF2, 2019 TE3, 2019 TE2
G96Mt. Lemmon Survey (MLS) in Arizona, 23 in MPECs 2019-T114, 2019-T115, 2019-T117, 2019-T118, 2019-T123, 2019-T130 & 2019-T139 -- 2019 TV2, 2019 TS2, 2019 TL2, 2019 TH2, 2019 TG2, 2019 TF3, 2019 SZ2, 2019 QW3, 2019 PE2, 2019 OY3, 2017 VB, 2017 NK, 2014 HH192, 2001 YM4, 1998 SE35, 523934, 36236, 303262, 190788, 18172, 137084, 11885, 3552
C53NEOSSat in Earth orbit, 1 in MPEC 2019-T116 -- 2
J43Oukaimeden Obs. in Morocco, 2 in MPEC 2019-T117 -- 503960, 141593
F51Pan-STARRS 1 (PS1) in Hawaii, 19 in MPECs 2019-T112, 2019-T113, 2019-T115, 2019-T117, 2019-T118, 2019-T119, 2019-T120, 2019-T121, 2019-T122, 2019-T125, 2019-T138 & 2019-T141 -- 2019 TW, 2019 TU2, 2019 TR2, 2019 TQ2, 2019 TN2, 2019 TM2, 2019 TL2, 2019 TH3, 2019 TH2, 2019 TF2, 2019 TE3, 2019 TE2, 2019 PH, 526878, 388468, 331999, 318411, 26663, 252399
F52Pan-STARRS 2 (PS2) in Hawaii, 6 in MPECs 2019-T117, 2019-T124 & 2019-T141 -- 2019 TT2, 2019 TH3, 524603, 355770, 254419, 154278
K63Pascoli Obs. in Italy, 2 in MPECs 2019-T114 & 2019-T116 -- 2019 TG2, 2
654Pomona College Table Mtn. Obs. (PCTMO) in southern California, 6 in MPECs 2019-T114, 2019-T115 & 2019-T117 -- 2019 TH2, 2019 TG2, 2019 SZ, 2019 LW1, 2019 GT3, 1620
L04ROASTERR-1 in Romania, 1 in MPEC 2019-T116 -- 2
104San Marcello Pistoiese Obs. in Italy, 2 in MPECs 2019-T114 & 2019-T116 -- 2019 TG2, 2
H36Sandlot Obs. in Kansas, 5 in MPECs 2019-T114, 2019-T119, 2019-T120, 2019-T130 & 2019-T138 -- 2019 TV2, 2019 TN2, 2019 TM2, 2019 TG2, 2019 TE3
C95SATINO-1 in France, 2 in MPECs 2019-T116 & 2019-T117 -- 2009 SP, 2
K96Savelli Obs., 1 in MPEC 2019-T116 -- 2
204Schiaparelli Obs. in Italy, 1 in MPEC 2019-T116 -- 2
033Schwarzschild Obs. in Germany, 3 in MPECs 2019-T119, 2019-T120 & 2019-T124 -- 2019 TT2, 2019 TN2, 2019 TM2
Q11Shinshiro Obs., 1 in MPEC 2019-T116 -- 2
G40,program code "," (21) via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2019-T116 -- 2
G40-program code "-" (22) via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2019-T117 -- 2019 SH1
G409B. Lutkenhoner in Germany via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2019-T116 -- 2
691Spacewatch 0.9m telescope in Arizona, 6 in MPECs 2019-T112, 2019-T115, 2019-T117, 2019-T121 & 2019-T122 -- 2019 TR2, 2019 TQ2, 2019 TH2, 2019 TE2, 2019 SU3, 2018 PK21
291Spacewatch 1.8m telescope in Arizona, 7 in MPECs 2019-T117 & 2019-T121 -- 2019 TQ2, 2019 TF1, 2019 SL7, 2019 SL3, 2019 SE3, 2019 RT3, 2019 RR3
W34Squirrel Valley Obs. in North Carolina, 1 in MPEC 2019-T116 -- 2
I52Steward Obs. Mt. Lemmon Station in Arizona, 31 in MPECs 2019-T114, 2019-T115, 2019-T117, 2019-T118, 2019-T119, 2019-T121, 2019-T122, 2019-T123, 2019-T130, 2019-T138 & 2019-T139 -- 2019 TV2, 2019 TS2, 2019 TR2, 2019 TR, 2019 TQ2, 2019 TP1, 2019 TM2, 2019 TM1, 2019 TL2, 2019 TK1, 2019 TH2, 2019 TG2, 2019 TF3, 2019 TE3, 2019 TA1, 2019 SZ6, 2019 SZ, 2019 SW8, 2019 SV8, 2019 SV6, 2019 SV4, 2019 SU3, 2019 ST8, 2019 SP8, 2019 SL7, 2019 SK8, 2019 SG9, 2019 SF8, 2019 SE7, 2019 SC7, 2019 SB10
A71Stixendorf Obs. in Austria, 1 in MPEC 2019-T116 -- 2
I81Tarbatness Obs. in Scotland, 1 in MPEC 2019-T116 -- 2
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2019-T117 -- 2019 FV
L01Visnjan Obs., 3 in MPECs 2019-T114, 2019-T120 & 2019-T130 -- 2019 TV2, 2019 TN2, 2019 TG2
C51WISE in Earth polar orbit, 1 in MPEC 2019-T141 -- 2019 TH3
I41Zwicky Transient Facility (ZTF) in southern California, 15 in MPEC 2019-T117 -- 2019 SZ2, 2019 SM, 2019 SH8, 2019 MK2, 2015 YL10, 2011 SG16, 2010 UH7, 86067, 494880, 442243, 326291, 162723, 154278, 2212, 1864
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 7 October '19

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS at 2358 UTC)
See the CRT page for a list of all objects rated recently as risks and our ephemerides page for a list of risk-listed objects under current observation.
The time horizon for JPL and NEODyS listings is 100 years, and both post impact solutions beyond that for some special objects.
For the latest official risk assessments, and for explanations of the terminology, see the NASA/JPL Sentry and NEODyS CLOMON2 risk pages.
0000NNN000

Object

Risk
Monitor
When
Noted
UTC
0000T0000
Year
Range

VI
#
000NN00
Prob
Cum
T0000
PS
Cum
T0000
PS
Max

T
S


Notes for Today's Latest Risk Assessments
2019 TF2NEODyS16302052-21171101.14e-04-5.02-5.370NEODyS: "Based on 10 optical observations (of which 0 are rejected as outliers) from 2019-10-05.424 to 2019-10-06.539."
JPL Sentry04322053-2119380.0002243308704-4.65-5.070JPL: Computed at 18:40 Oct. 6th Pacific time based on 10 observations spanning 1.1147 days (2019-Oct-05.42366 to 2019-Oct-06.538334). Diameter approximately 0.017 km. from weighted mean H=26.49.
2019 TC2NEODyS16302097-2118771.01e-05-6.66-7.610NEODyS: "Based on 18 optical observations (of which 0 are rejected as outliers) from 2019-10-05.218 to 2019-10-06.279."
JPL Sentry04322108-2119531.26060945e-05-6.55-7.490JPL: Computed at 18:07 Oct. 6th Pacific time based on 18 observations spanning 1.0610 days (2019-Oct-05.21758 to 2019-Oct-06.27854). Diameter approximately 0.009 km. from weighted mean H=27.80.
2019 TF1NEODyS16302045-208529.46e-10-10.16-10.340NEODyS: "Based on 20 optical observations (of which 0 are rejected as outliers) from 2019-10-03.205 to 2019-10-07.352."
2019 TDJPL Sentry16302042-206021.7186e-06-7.68-7.850JPL: Computed at 06:52 today Pacific time based on 26 observations spanning 5.9951 days (2019-Oct-01.3317 to 2019-Oct-07.32684). Diameter approximately 0.005 km. from weighted mean H=29.18.
NEODyS16302032-206075.15e-06-7.19-7.430NEODyS: "Based on 26 optical observations (of which 0 are rejected as outliers) from 2019-10-01.333 to 2019-10-07.328."
2019 SD10JPL Sentry1630R E M O V E DJPL: Risk listing removed at 1354 UTC today
NEODyS1630203412.3e-11-9.86-9.860NEODyS: "Based on 22 optical observations (of which 0 are rejected as outliers) from 2019-09-30.281 to 2019-10-07.192."
2019 SK9JPL Sentry16302099-209912.213e-09-9.77-9.770JPL: Computed at 06:54 today Pacific time based on 17 observations spanning 6.9741 days (2019-Sep-30.29928 to 2019-Oct-07.2734). Diameter approximately 0.013 km. from weighted mean H=27.15.
NEODyS16302045-209931.63e-08-8.79-9.080NEODyS: "Based on 17 optical observations (of which 0 are rejected as outliers) from 2019-09-30.300 to 2019-10-07.274."
2019 SX8JPL Sentry16302110-211675.510232e-07-8.53-8.850JPL: Computed at 07:19 today Pacific time based on 22 observations spanning 6.1590 days (2019-Sep-30.34802 to 2019-Oct-06.50703). Diameter approximately 0.005 km. from weighted mean H=28.93.
NEODyS16302110-211633.76e-08-9.72-9.740NEODyS: "Based on 22 optical observations (of which 1 are rejected as outliers) from 2019-09-30.349 to 2019-10-06.508."
2019 SQ8JPL Sentry16302094-211038.9335e-09-7.20-7.270JPL: Computed at 06:53 today Pacific time based on 26 observations spanning 7.8095 days (2019-Sep-29.42055 to 2019-Oct-07.23006). Diameter approximately 0.077 km. from weighted mean H=23.21.
NEODyS16302094-209821.52e-08-6.97-6.970NEODyS: "Based on 26 optical observations (of which 0 are rejected as outliers) from 2019-09-29.421 to 2019-10-07.231."
2019 SL7JPL Sentry16302097-210522.9842e-07-7.08-7.200JPL: Computed at 06:30 today Pacific time based on 39 observations spanning 10.690 days (2019-Sep-26.43402 to 2019-Oct-07.12383). Diameter approximately 0.021 km. from weighted mean H=26.02.
NEODyS16302097-210521.5e-07-7.38-7.490NEODyS: "Based on 39 optical observations (of which 0 are rejected as outliers) from 2019-09-26.435 to 2019-10-07.125."
2019 SU3JPL Sentry16302084-2119590.006210908595-3.61-3.650JPL: Computed at 06:40 today Pacific time based on 110 observations spanning 13.913 days (2019-Sep-23.249638 to 2019-Oct-07.16298). Diameter approximately 0.013 km. from weighted mean H=27.15.
NEODyS16302084-21182115.98e-03-3.62-3.630NEODyS: "Based on 111 optical observations (of which 1 are rejected as outliers) from 2019-09-23.250 to 2019-10-07.164."
2019 SDJPL Sentry16302080-208016.237e-05-4.55-4.550JPL: Computed at 06:30 today Pacific time based on 128 observations spanning 19.930 days (2019-Sep-17.240317 to 2019-Oct-07.17034). Diameter approximately 0.028 km. from weighted mean H=25.40.
NEODyS1630208012.18e-05-5.02-5.020NEODyS: "Based on 128 optical observations (of which 1 are rejected as outliers) from 2019-09-17.241 to 2019-10-07.171."
2019 RT3JPL Sentry16302075-2117180.0001311081-4.16-4.250JPL: Computed at 06:33 today Pacific time based on 106 observations spanning 25.607 days (2019-Sep-11.603747 to 2019-Oct-07.2109). Diameter approximately 0.032 km. from weighted mean H=25.15.
NEODyS16302075-2118432.33e-04-3.92-3.980NEODyS: "Based on 106 optical observations (of which 0 are rejected as outliers) from 2019-09-11.605 to 2019-10-07.212."

Legend: VI# = VI count, Prob Cum = cumulative probability, PS Cum/Max = cumulative/maximum Palermo Scale, TS = Torino Scale (next 100 years)

An impact solution, also known as a "virtual impactor" (VI), is not a prediction but rather a possibility derived from a variant orbit calculation that cannot be eliminated yet based on the existing data. Elimination can come quickly with just a little further observation or may take weeks or months, sometimes years. Once superceded or eliminated, a former impact solution has zero relevance to an object's risk. See Jon Giorgini's "Understanding Risk Pages" to learn more.

Chronology  on 7 October '19

Times are UTC for when items were noted or added by The Tracking News.

2358Grabbed MPEC 2019-T141 - 2019 TH3 - see above
2225Updated Traffic Report
2201Grabbed MPEC 2019-T140 - S/2004 S 30 - see above
2033Grabbed MPEC 2019-T138 - 2019 TE3 - see above
Grabbed MPEC 2019-T139 - 2019 TF3 - see above
1832Grabbed MPEC 2019-T131 - S/2004 S 24 - see above
Grabbed MPEC 2019-T132 - S/2004 S 25 - see above
Grabbed MPEC 2019-T133 - S/2004 S 26 - see above
Grabbed MPEC 2019-T134 - S/2004 S 27 - see above
Grabbed MPEC 2019-T135 - S/2004 S 28 - see above
Grabbed MPEC 2019-T136 - S/2004 S 29 - see above
Grabbed MPEC 2019-T137 - S/2004 S 30 - see above
1800Grabbed MPEC 2019-T130 - 2019 TV2 - see above
1700Grabbed MPEC 2019-T126 - S/2004 S 20 - see above
Grabbed MPEC 2019-T127 - S/2004 S 21 - see above
Grabbed MPEC 2019-T128 - S/2004 S 22 - see above
Grabbed MPEC 2019-T129 - S/2004 S 23 - see above
1630Noted that JPL Sentry has updated its 2019 RT3 risk assessment - see above
Noted that NEODyS has updated its 2019 RT3 risk assessment - see above
Noted that JPL Sentry has updated its 2019 SD risk assessment - see above
Noted that NEODyS has updated its 2019 SD risk assessment - see above
Noted that JPL Sentry has removed 2019 SD10 as an impact risk - see above
Noted that NEODyS has updated its 2019 SD10 risk assessment - see above
Noted that JPL Sentry has updated its 2019 SK9 risk assessment - see above
Noted that NEODyS has updated its 2019 SK9 risk assessment - see above
Noted that JPL Sentry has updated its 2019 SL7 risk assessment - see above
Noted that NEODyS has updated its 2019 SL7 risk assessment - see above
Noted that JPL Sentry has updated its 2019 SQ8 risk assessment - see above
Noted that NEODyS has updated its 2019 SQ8 risk assessment - see above
Noted that JPL Sentry has updated its 2019 SU3 risk assessment - see above
Noted that NEODyS has updated its 2019 SU3 risk assessment - see above
Noted that JPL Sentry has updated its 2019 SX8 risk assessment - see above
Noted that NEODyS has updated its 2019 SX8 risk assessment - see above
Noted that NEODyS has posted 2019 TC2 as an impact risk - see above
Noted that JPL Sentry has updated its 2019 TD risk assessment - see above
Noted that NEODyS has updated its 2019 TD risk assessment - see above
Noted that NEODyS has updated its 2019 TF1 risk assessment - see above
Noted that NEODyS has posted 2019 TF2 as an impact risk - see above
Grabbed MPEC 2019-T116 - Comet 2I/Borisov - see above
Grabbed MPEC 2019-T117 - Daily Orbit Update - see above
Grabbed MPEC 2019-T118 - 2019 TL2 - see above
Grabbed MPEC 2019-T119 - 2019 TM2 - see above
Grabbed MPEC 2019-T120 - 2019 TN2 - see above
Grabbed MPEC 2019-T121 - 2019 TQ2 - see above
Grabbed MPEC 2019-T122 - 2019 TR2 - see above
Grabbed MPEC 2019-T123 - 2019 TS2 - see above
Grabbed MPEC 2019-T124 - 2019 TT2 - see above
Grabbed MPEC 2019-T125 - 2019 TU2 - see above
0432Noted that JPL Sentry has posted 2019 TC2 as an impact risk - see above
Noted that JPL Sentry has posted 2019 TF2 as an impact risk - see above
0009Grabbed MPEC 2019-T112 - 2019 TE2 - see above
Grabbed MPEC 2019-T113 - 2019 TF2 - see above
Grabbed MPEC 2019-T114 - 2019 TG2 - see above
Grabbed MPEC 2019-T115 - 2019 TH2 - see above